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    Re: Role of CN at sea, was Re: Averaging sights ...
    From: Alexandre Eremenko
    Date: 2004 Oct 13, 02:16 -0500

    I agree that the "justification" of Cel Nav as
    a "backup for GPS" cannot be defended.
    GPS is indeed more precise, more reliable and easier
    to use.
    On my opinion, we do Cel Nav simply because we like it.
    As we like sailing. An airplane is faster, more reliable and
    easier to use, if your purpose is to go from a point A to a point B.
    The reason we sail is not that
    this is the best way of transportation.
    And Lunars are not the "best" way to find GMT:-)
    You can use radio and wristwatch instead.
    On Wed, 13 Oct 2004, Frank Reed wrote:
    > What's the best backup for the GPS system itself?
    > And the answer there,
    > too, is another GPS

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